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  1. From: rjn@hpfcso.FC.HP.COM (Bob Niland)
  2. Date: Tue, 28 Jul 1992 23:42:40 GMT
  3. Subject: Re: Parallel port compatibility problems?
  4. Message-ID: <7371188@hpfcso.FC.HP.COM>
  5. Organization: Hewlett-Packard/WSY Ft.Collins,CO,USA
  6. Path: sparky!uunet!europa.asd.contel.com!darwin.sura.net!wupost!sdd.hp.com!hpscdc!cupnews0.cup.hp.com!hppad.waterloo.hp.com!hppad!hpfcso!rjn
  7. Newsgroups: comp.sys.hp
  8. References: <1992Jul28.221947.247982@cs.cmu.edu>
  9. Lines: 23
  10.  
  11. In comp.sys.hp, tgl+@cs.cmu.edu (Tom Lane) writes:
  12.  
  13. > I've found out the hard way that the supposedly Centronics-compatible
  14. > parallel port on HP models 362 & 382 (and probably the rest of the
  15. > Series 300/400 line) is not compatible with some printers which work
  16. > just fine with PCs.
  17.  
  18. Try setting the LSB of the /dev/lp device file to 1.  
  19.  
  20. crw-rw-rw-   1 lp       other     21 0x170001 Jul 28 17:14 /dev/lp
  21.                                             ^
  22.  
  23. By default, the parallel hardware/software runs an interlocked handshake.
  24. Minor bit 0 switches it to "pulsed" mode.
  25.  
  26. Regards,                                              Hewlett-Packard
  27. Bob Niland      Internet: rjn@FC.HP.COM               3404 East Harmony Road
  28.                 CompuServe:  71044,2124               Ft Collins CO 80525-9599
  29.  
  30. This article represents only the opinion[s] of its author, and is not an
  31. official or unofficial position of, or statement by, the Hewlett-Packard
  32. Company.  The text is provided for informational purposes only.  It is
  33. supplied without warranty of any kind.
  34.